OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application
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/*
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* edma_test.c, J( P/ o! P4 z0 R
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE! D" X1 |0 c0 l
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT. w4 M& h8 p ?0 ]
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.5 { |6 z, r6 T5 _3 G; E2 x- V
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any8 ?6 P2 F. p; c8 u0 J$ R8 ^5 J
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.9 R, i+ z' H3 _5 ~) p) ^+ m
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#include <linux/module.h>8 L5 S8 V9 t: a/ V! a: `( a p
#include <linux/init.h>) k9 z& A. l9 |; z. w0 v0 v4 h2 l
#include <linux/errno.h>2 y' M8 i" |1 c. ?6 d9 M
#include <linux/types.h>8 ]( {3 f. u2 K' }3 z7 z
#include <linux/interrupt.h>
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#include <asm/io.h>4 @2 ]( K( n: D5 } {. U: i9 e: C1 i' t
#include <linux/moduleparam.h>- Y" b7 ]# P7 a) r3 w& M a
#include <linux/sysctl.h>
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#include <linux/mm.h>. ~2 e9 ~$ \' y- ]* \& U' a
#include <linux/dma-mapping.h>
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#include <mach/memory.h>1 I& j8 |, }; a
#include <mach/hardware.h>
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#include <mach/irqs.h>. I5 f3 o3 g" z* U( @/ i0 J
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/1 T m1 }- S8 S/ j0 o' ]
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#ifdef EDMA3_DEBUG5 U. _: ]! B. l1 z7 g% D
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)) b) P( g8 d8 q( v
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)3 ~0 I1 d. p( V0 V; j2 r& B: V" j
#else3 j. Z- I1 e& @# i2 R
#define DMA_PRINTK( x... )& d J4 V' c% q. V8 P2 O1 m
#define DMA_FN_IN0 [) }7 x2 S1 x! ~# ]3 |, u. A1 c
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)+ z/ s5 ^; f$ q2 L$ E% x
#define STATIC_SHIFT 3' ]; O5 E* g. o- t9 M
#define TCINTEN_SHIFT 202 U" c Y1 L7 @) ?8 a4 Q; W
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 237 x/ }: p8 L- U
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static volatile int irqraised1 = 0;3 ~) A( Y% A, y* V3 o
static volatile int irqraised2 = 0;6 T) F$ [, m# [" y/ k
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! K: G( h9 K8 m6 ^- K1 I! q' d
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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dma_addr_t dmaphyssrc1 = 0;- T+ c2 j. L4 u2 M: m! K
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL; t& s" v# i4 e8 W; l$ p- c+ A
char *dmabufdest2 = NULL;
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static int acnt = 512;) c; Q$ l5 a- C% i# [, L7 f% M0 k
static int bcnt = 8;4 B& D4 r1 S h: ?' ~
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);. X. O7 a n- l' S1 E) @
module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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